Type-writing machine.



A. 1. amass. TYPE WRITING MACHINE. APPLICATION FI'LED AUG-28. I916.

ammm

mm Nov. 20 1917.

2 SHEETS-SHEET I.

IMVEMTUR mum M I H15 ATTHRNEY A. J. BRIGGS. TYPE WRITINGMAOHINE. APPLIQATION FILED numza. 191s.

mm N v. 20, 191?.

2 SHEETS-SHEET 2.

ARTHUR J. BRIGGS, 0F SYRACUSE, NEW YORK, ASSIGNOJR, '10 REMINGTON TZPEWEIE'EER GOMIPA, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

' TYPE-WRITING MACHINE.

. Specification of Letters Patent.

lPatenntedl Nov. 261b, 1191 "2?.

Application filed August 28, 1916. Serial No. 117,259.

chines, listing machines or other machines in which printing is'done, and my invent ion has for its principal ob] ect to provide an 1mproved construction of the platen frames or paper carriages of such machines.

Specifically stated, one of the cbJectsOf the invention is to provide a typewriting machine paper carriage of good construction, of light weight, and of low cost of manufacture.

To the above and other ends which will hereinafter appear my invention consists in certain features of construction and combinations and arrangement of parts, all ofwhich will be fully set forth herein and particularly pointed out in the claims.

In the accompanying drawings,

Figure 1 is a rear elevation of the upper part of a typewriting machine having my invention embodied therein.

Fig. 2 is a front to rear vertical section of the same, taken near but not exactly atthe middle of the machine.

Fig. '3 is an end elev'ation of the Fig. 4 is atop plan view. 1

Fig. 5 is a view of a sheet metal framepie'ce constituting one of the elements of my invention and showing said frame-piece fiat before it'is bent up.

same.

fhe particular machine to which I have here shown my invention applied is a typewriter, the major part of whlch is not shown in the drawings, but the main frame of.

which comprises a casting including a cross .bar 1, which constitutes one of the carriage rails of the machine, and which casting also comprises certain posts or upright parts 2, which connect with other parts of the framework, not necessary here to be shown or de-" scribed. Said frame also comprises'an upright wall or casing part 3 and top plates 4:, one on each side of the machine.

The carriage frame or body consists chiefly, and in fact in the present instance almost entirely, of two parts, one of which is the carriage rail or other traversing ele' ment which cooperates with the stationary rail of the main frame, and the other of which is a single piece of metal having vanous brackets and other securing means on which the working parts of the carriage are mounted. lhe last mentioned piece of metal in the present instance, and preferabl also includes other devices, such as a fee rack and carriage stops.

In the present instance almost the entire carriage body is made up of two pieces of sheet metal these includin the rails and also the mounting for the p aten, feed rolls, paper fingers, line space mechanism, carriage release mechanism and the paper apron. One of said pieces of sheet metal also has parts thereof formed into end stops for the carriage and the feed rack for the carriage. My invention however, is broad enough to include carriage constructions that have not been reduced to this extraordinary degree of simplicity.

That part of the carriage which constitutes its traversing means or rails consists in the present. instance of a single bar of sheet metal 5 having the form shown in the drawing. This rail element has its middle part as seen in end view, in a horizontal plane, and its forward part-bent downward at an angle of about 45 and thence rearward at a like angle to form a grooved rail 6 for cooperation with feed rollers or balls 7. The rail 6 has its groove facing a groove in the forward edge of the casting 1. The

rear portion of the rail part 5 is bent downward at an angle of about 45 and thence forward forming a rear rail 8 which cooperates with one or more feed rollers or balls 10, which rollers also lie in the rearwardly facing groove of a rail 11. In the present instance said rail 11 consists of a bar of sheet metal properly folded to form a longitudinal groove as shown, and secured at its lower part by screws 12, Fig. l,r to the rear surface of the rail bar 1. The sheet metal rail 11 is made of spring metal of such a degree of resilience as to enable it to take up automatically all looseness in the'bearings and to obviate the necessity for any nice adjustment of the bearings. lt will, of course, be understood that all of this rail and roller bearing construction can be varied as far as the present invention is concerned.

Outside of the part of the carriage just described and which may be called the traversing part, the carriage body preferably consists of a single frame-piece and said frame-piece is preferably formed of a single piece of sheet metal which has been designated generally in the drawing by the reference numeral 13. This frame piece can be secured to the traversing member in any suitable way. In the present instance it is shown so secured by four screws, namely, two screws 14, Fig. 4, near the ends of the carriage and two other screws 15 at intervals in the length of the carriage. The frainepiece 13 is shown developed in Fig. 5 where it will be seen that it consists of a bar or plate of a length approximating that of the carriage itself and having projecting from its ends tongues 16 which are afterward bent up as shown in Fig. 1 to constitute the brackets which support the roller platen 17. For some of the purposes of my invention said platen can be mounted in the brackets 16 in any suitable way but I prefer the means shown in the drawing. Said platen has an axle 18 on the ends of which are mounted finger wheels 20. Each of the brackets 16has an open-ended slot or notch 21 into which the axle 18 can be inserted from the top. Said shaft is journaled in two bearing blocks 22, one at each end of the platen, said bearin blocks beingsecured to the brackets 16 y means of screws 23 which pass through suitable openings 24in the brackets 16. These openings are here shown as slots elongated in an up and down direction so that the platen can be adjusted as to height before tightening the screws 23. It will be seen that the construction is such as to afford a good bearing for the platen axle at exactly the right position without any machine work at all on the frame-piece 13. In Figs. 1 and 4, I have shown in full lines the finger wheels 20, the axle 18, and the end-piece 26 at one end of the platen and also the line-space wheel 27 at the other end of the platen, the platen itself being indicated in broken lines.

The paper feed rollers consist of rubbercovered cylinders 30, each having an axle 31. These axles pass through open-ended slots 32, Fig. 5, in ears 33 struck up out of the sheet metal of the frame-piece 13. As here shown said ears are blanked out while the metal is flat as shown in Fig. 5 and are afterward bent up into the positions shown in the other figures of the drawings. The rollers can be pressed against the paper by any suitable spring means. As here shown each roller is provided with a single wire spring 34 bent into a shape somewhat like that of the letter M, the two end arms pressing upward against the axles 31- and the upper angles of the M being hooked under cars 35 struck up out of the sheet metal of the frame-piece 13. As here shown.

\ part of the cross-piece.

each axle 31 is formed near its ends with a circumferential groove 36, and the spring 34 is bent into a hook-shape at its ends where it engages said grooves.

The machine is provided with a combined paper apron and paper table 37. This at its forward part curves upward against the platen terminating at its forward edge a suitable distance below the printing line which in the present instance is a little above the level of the platen axle. At its rearpart said paper apron and table extends backward and upward in the position and at the angle usually occupied by paper tables. This combined paper table and paper apron consists entirely of a single piece of sheet metal having openings formed therein through which the feed rolls 30 are able to engage the platen and having ears 38 struck out therefrom downward and toward the rear. Said ears are pivoted on a wire or rod 40 which extends nearly the length of the platen and which in addition to passing through the ears 38 also passes through holes 41, Fig. 5, made in extensions of some of the ears 33. In the present instance four of said ears 33 have such extensions and.

.against the under side of the paper apron in front of the pivot 40 whereby the tension of the springs 34 is also exerted to hold up the apron.

The paper fingers comprise arms 42 and as here shown each of these has a roller 43 journaled in its upper end and pressed against the platen above the writing line.

Each of the arms 42 is an integral part of a piece of spring steel of inverted T-shape,

Fig. 4, the cross part 44 of said T-shaped piece of metal having a flange 45 bent down from its forward edge, and other flanges 46 bent down from its rear edge at the ends thereof, the arm 42 risin from the middle ach of the flanges 46 is bent back upon itself to forma narrow flange which hooks under a bar 48. The cross part of the T lies flat against the bar 48 which constitutes part of the frame-piece 13. As shown in Fig. 5, said frame-piece V is stamped out with two long slots 50 therein, and each of said slots at each of its ends joins a forwardly extending notch 51. There are thus roduced two bars 48 connected to the main body of the frame-piece 13 by integral strips 52 at the two ends of said frame-piece and by a third integral strip 53 at the middle of the frame-piece.

naaaaia when the platen is off of the machine the paper fingers can be set in place on the bars 48 but when the platen is put into place on the machine these fingers are pressed toward the front of the machine at their upper ends and this pressure is resisted by the hooked flange at the top and it is sufficient to prevent the flange 45 from getting out of engagement with the bar 48. It w1ll be perceived that the spring tension on these paper fingers places them under frictional restraint to prevent them from accidental displacement longitudinally of the bar or bars 48 but that the paper fingers can be adjusted along said bars by hand. It will also be perceived that the bars on which these paper fingers are mounted consist of integral parts of the frame-piecel3.

The end stopsfor limiting the extreme travel of the carriage in both directions consist of ears or lugs projecting forward from the extreme ends of the bar 48, these also being integral parts of the frame-piece 13. The machine is provided with a vibrator 56, Fig. 2, for the ink ribbon.57 and said vibrator is guided by ears 58 engaging a bracket 60 which is secured by screws 61 to the front edge of the casting 1 near the middle of the machine. This bracket 60 also has ears 62 bent in at the middle thereof and the two ears together constituting a type guide. The bracket 60 is itself, as shown in the present instance, struck up out of sheet metal and it has two ears 63 projecting therefrom toward the rear of the machine into position to be struck by the ears 55 and therefore to limit the endwise movement of the carriage. Adjustable carriage stops can, of course, also be provided, if desired, but the stops just described limit 7 the extreme excursion of the carria e.

The line spacing mechanism can, 0 course, be of any suitable construction as far as the present invention-is concerned. The mechanism actuallyshown is carried by the framepiece 13 like the other working parts of the carriage. Said mechanism includes a line space handle 65 rigidly mounted on the forward end of a horizontal rock shaft 66 which is journaled in ears 67 bent oil? from onefof the brackets 16. In the present instance these devices are at the left-hand end of the carriage. Endwisemotion of the shaft 66 toward the rear isprevented bythe hub of the hand lever 65 and such motion of said shaft toward the front is prevented by the hub of an arm 68 extending toward the right from the rear end of the shaft 66 and having. a line space pawl 7 O pivoted thereto on a pivot screw 71. The dog or pawl 70 extends .upward from the pivot 71 into position to engage the teeth of the wheel 27 but said pawl also has a horizontal arm extending from said pivot in the general direction of the shaft 66 and through said arm there extends a pin 72 projecting toward the front of the machine and having a groove which is engaged by a wire spring 73, which spring passes through a vertical slot 74 in the bracket 16 andis coiled around the shaft 66,

the other end of it pressing against the lefthand face of a lug 75 projecting toward the rear from said bracket 16. This spring presses upward on the pin 72, tending to rock the pawl 70 about its pivot 71 toward the -wheel 27 and tending also to lift said pawl, thus rockingthe shaft 66. In short, this is the restoring spring both for the line space handle and also to press the pawl 70 toward the wheel. The upward motion of the arm 68, is limited by the lug 75. The

motion of the pawl 70 about its pivot 71 is limited by means not shown, so that said pawl normally stands out of engagement with the wheel 27 The whole construction is such that normally the parts stand in the position shown in Fig. 1 but if the handle 65 be operated toward the operators right the arm 68 and pawl 70 first swing asa-n entirety about the shaft 66 whereby the pawl is moved into engagement with the wheel 27. ,Continued motion of the handle swings the arm 68 downward but further motion of the pawl 70 toward the wheel being prevented,

by said wheel, the pawl is drawn downward, turning the wheel, the pawl itself turning slightly on its pivot. The extent of rotation with the result that the downward motion of the pawl is arrested and the pawl itself is jammed into the wheel 27 to prevent overthrow. The stopping means shown in the present instance consists of a lever 77 made of sheet metal and lying flat on top of the frame-piece 13- to which it is pivoted by means of one of the screws 14 hereinbefore referred to, the screw being made shouldered and headed to perform the double function of serving as a pivot for this lever and of securing the frame-piece 13 to the rail member 5. The lever 77 can be turned about its pivot 14 by means of a handle 78 projecting rearward therefrom. Said lever has a lug 8 0 projecting upward therefrom in such position that when the handle 78 stands in its left-hand position, shown in the drawings, this lug is in position to be struck by the pin 72, and said lug is of such height as to limit the line spacing operation to an extent equal to one tooth of the wheel 27. If the handle 78 be moved toward the operators right, that is to say, toward the observers left in Fig. 4, the lug 80 will be moved out of the path of the pin 72 and a fiat branch 81 of the lever 77 will be moved into said path with the result that the pin 72 will be arrested after a line spacing operation of two teeth of the wheel 27.

A line space detent is shown in the drawings consisting of a roller 82 mounted on the end of a plate-spring 83 which is secured by two screws 84 to the inner face of the bracket 16. It will, of course, be understood that this line space mechanism is not claimed herein and it is described only to show howit is mounted on the frame-piece 13. It will be perceived that this mounting is of such a character as to require no machining of said frame-piece beyond possibly reaming out smooth bearing surfaces for the shaft 66in the ears 67.

The feed rack 85 for the carriage consists simply of the rear edge of the frame-piece 13. The rear-part of said frame-piece is bent down at a slo e of 45 and thence down again into a vertlcal plane and gear teeth are cut therein, said gear teeth meshing with a feed pinion 86 rigid with an escapement wheel 87, said wheel and pinion being mounted on a shaft 88 journaled in the casting 1. The wheel 87 is engaged by two feed dogs 90 and 91, not necessary here to be described further than to say that the dog 91 is normally in engagemnt with the wheel and that said dog is pivoted at 92 and is held in engagement with the wheel by means of a spring. Said dog has an upstanding arm 93 which is in position to be engaged by an ear 94 bent off from a releasing lever 95, which is. pivoted at 96 on a fixed bracket 97. Said lever has a lug'or ear 98 bent 0E therefrom toward the front of the machine and lying under the flanged'lower edge of a releasing bar 100. Sa1d bar extends substantially the whole length of the carriage on which it is mounted. Near each end said bar is formed with an inclined slot 101 through which passes a headed pin 102, said pins being secured as by riveting in cars 103 of the frame-piece 13. The bar 100 is capable of a sliding motion on the pins 102 toward the operators right and downward. It is normally held in its left-hand position by a spring 104 connected at one end to said bar and at its otherend to an ear 105 of the frame-piece 13; but it can be moved. to its operated position by means of a finger piece 106 formed on its right-hand end. When the bar 100 is operated by said finger piece it depresses the lug 98, thus operating the lever 95, theear 94 of which rocks the dog 91 about its pivot and releases the carriage so that the latter can be moved to an indefinite extent in either direction. This escapement and releasin mechanism is not claimed herein any furt er than respects itsconnection with the frame-piece 13. The ears 103 and 105 stand in the same vertical plane as the feed rack 85. These parts are struck out of the S10 ing part of the frame piece 13 when said frame-piece is bent, thus leaving them standing vertical. It will be perceived that that portion of the releasing mechanism which is mounted on the carriage is connected to said carriage through ears struck up from thesheet metal framepiece 13. v 7

From all of the above description it will be perceived that the carriage structure herein shown and described embodies all of the essentials of such a structure and that it is of substantial construction, of little weight, and quite remarkable in its simplicity of construe ion and in respect to the ease with which a d the low cost at which it can be manufactured.

It will, of course, be understood that my invention is not limited to the precise construction shown and that many of the advantages of my invention can be secured without utilizing all of the features of the construction shown, but that within the scope of my invention some of said features can be used without others. It will also be understood that various changes can be made'in the details of construction and arrangement without departing from my invention.

Several of the parts of the machine more or less fully shown and described or indicated in the present case, are not claimed herein but constitute the subject-matter of other applications of mine.

,What I claim as new and desire to secure by Letters Patent, is:

-1. In a machine of the class described, a carriage frame having a platen and feed 110 rolls mounted therein, said frame comprising a bed plate of sheet metal extending lengthwise of said carriage and having brackets bent up at the ends thereof to sup port the platen and having also between 115 said brackets ears bent up out of the body thereof into vertical, fore and aft planes, said feed rolls being mounted in said ears.

2. In a machine of the class described, a. carriage comprising longitudinal rollerbearing rails and asheet-metal piece mounted on said rails and extending lengthwise of said carriage, said sheet metal piece having ears bent up out of the body thereof into vertical, fore and aft planes, and feed rolls mounted in said ears.

3. In a machine of the class described, a carriage frame comprising a sheet-metal bed plate extending lengthwise of said carriage and having longitudinal slots 50 therein near one edge thereof to define bars 48, and paper fingers mounted on said bars.

4. In a machine of the class described, a carriage comprising a longitudinal bar- 5 bent longitudinally to produce a pair of roller-bearing rails fi and 8, and a longitudinal bed plate 13 of sheet metal lying on and secured to said bar 5 and having various integral brackets or cars bent up therefrom to support the Working parts of said carriage,

5. In a machine of the class described, a carriage comprising a longitudinal bar 5 bent longitudinally to produce a pair of roller-bearing rails 6 and 8, and a longitudinal bed plate 13 of sheet metal lying on and secured to said bar 5 and having various integral brackets or ears bent up therefrom to support the Working parts of said carriage, and said bed plate having'one edge thereof bent over and beyond one of said rails and having teeth thereon to constitute the feed rack of .said carriage.

6. In a machine'of the class described, a carriage comprising a longitudinal bar 5 bent longitudinally 'to produce a pair of roller-bearing rails 6. and 8, and a longitudinal bed plate 13 of sheet metal lying on and secured to said bar 5 and having various edge thereof to define a bar 48; and a paper finger mounted on said bar 48.

7. In a machine of the class described, a carriage frame having a platen and feed rolls mounted therein and springs to press said feed rolls against the platen, said frame comprising a bed plate of sheet metal extending lengthwise of said carriage and having ears bent up out of the body thereof into vertical fore and aft planes to support said feed rolls, and having also ears or lugs 35 struck up therefrom to hold the said springs that are associated With said feed rolls.

Signed at Syracuse,.in the county of Onondaga and State of New York this 24th day of August, A. D. 1916, V

, ARTHUR J. BRIGGS.

Witnesses: Ansns'ros J. BARNES,- FRANK S. LEWIS. 

